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63 lines
1.2 KiB
63 lines
1.2 KiB
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
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/* |
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* Copyright (C) 2007, 2008 Karsten Wiese <[email protected]> |
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*/ |
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#ifndef _UAPI__SOUND_USB_STREAM_H |
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#define _UAPI__SOUND_USB_STREAM_H |
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#define USB_STREAM_INTERFACE_VERSION 2 |
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#define SNDRV_USB_STREAM_IOCTL_SET_PARAMS \ |
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_IOW('H', 0x90, struct usb_stream_config) |
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struct usb_stream_packet { |
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unsigned offset; |
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unsigned length; |
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}; |
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struct usb_stream_config { |
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unsigned version; |
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unsigned sample_rate; |
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unsigned period_frames; |
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unsigned frame_size; |
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}; |
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struct usb_stream { |
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struct usb_stream_config cfg; |
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unsigned read_size; |
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unsigned write_size; |
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int period_size; |
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unsigned state; |
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int idle_insize; |
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int idle_outsize; |
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int sync_packet; |
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unsigned insize_done; |
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unsigned periods_done; |
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unsigned periods_polled; |
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struct usb_stream_packet outpacket[2]; |
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unsigned inpackets; |
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unsigned inpacket_head; |
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unsigned inpacket_split; |
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unsigned inpacket_split_at; |
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unsigned next_inpacket_split; |
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unsigned next_inpacket_split_at; |
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struct usb_stream_packet inpacket[]; |
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}; |
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enum usb_stream_state { |
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usb_stream_invalid, |
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usb_stream_stopped, |
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usb_stream_sync0, |
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usb_stream_sync1, |
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usb_stream_ready, |
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usb_stream_running, |
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usb_stream_xrun, |
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}; |
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#endif /* _UAPI__SOUND_USB_STREAM_H */
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